Only populate load balancer fields if lb_config is non-empty
Only populate load balancer fields if lb_config is non-empty

rancher/rancher-compose-executor,rancherio/rancher-compose,carolynhu/rancher-compose-executor,rancher/rancher-compose-executor,rancherio/rancher-compose,carolynhu/rancher-compose-executor,carolynhu/rancher-compose-executor,rancher/rancher-compose-executor,rancherio/rancher-compose